I'm running a straight flat hydraulic in a 454 and, since I am trying to keep my revs below 6,000 at only .565 lift, I didn't see the reason to spend 2x+ $$$$ to go roller hydraulic. I think you'll find quite a few though.
My cam kit (including springs, retainers, polylocks, shims, cam, lifters, was only $400. Hyd/roller was about $950 for no real gain. My Taylor has to pull primary duty as a working lake boat towing skiiers/tubers which is why I didn't want to get so much lift as to destroy my idling ability below 1500RPM.